Earth's Structure, Position, Composition, and Density

Front

Lithosphere

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

Asthenosphere

Back

A semi-fluid layer beneath the lithosphere which allows for the movement of tectonic plates.

Front

Inner Core

Back

The solid innermost layer of the Earth, composed primarily of iron and nickel.

Front

Outer Core

Back

The liquid layer surrounding the inner core, responsible for Earth's magnetic field.

Front

Mantle

Back

The thick layer of rock between the Earth's crust and core, involved in plate tectonic movements.

Front

Crust

Back

The thin, outermost layer of the Earth, composed of solid rock.

Front

Molten

Back

Describes a substance, typically rock, that is liquefied by heat.

Front

Magnetic Field

Back

The area of magnetic force around the Earth, generated by movements in the outer core.

Front

Continental Plate

Back

A large, rigid slab of the Earth's lithosphere that carries continents.

Front

Oceanic Plate

Back

A tectonic plate at the bottom of the oceans, denser than continental plates.